ワンドリンク制せい

noun

one-drink minimum; one-drink policy

A system at restaurants, bars, or karaoke where each customer must order at least one drink, often as a condition of entry or seating.

• このカラオケ店てんはワンドリンク制せいです。

  This karaoke place has a one-drink minimum.

• ワンドリンク制せいなので、まず飲のみ物ものを注ちゅう文もんしてください。

  Since it's a one-drink policy, please order a drink first.